基于非局部Timoshenko梁模型的单壁碳纳米管自由振动

IF 1.5 4区工程技术 Q3 MECHANICS

Journal of Mechanics Pub Date : 2021-10-13 DOI:10.1093/jom/ufab028

Yu-Chi Su, TS Cho

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引用次数: 6

摘要

基于非局部Timoshenko梁模型，研究了单壁碳纳米管在弹性介质中的自由振动。研究了长细比、边界条件、原子结构和嵌入介质刚度对swcnts固有频率和模态振型的影响。对于嵌入在软弹性介质中的小长细比高模态的单壁碳纳米管，非局部效应是显著的，除了无箝位的单壁碳纳米管的基频外，它还会软化单壁碳纳米管。

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Free vibration of a single-walled carbon nanotube based on the nonlocal Timoshenko beam model

Free vibration of a single-walled carbon nanotube (SWCNT) embedded in an elastic medium is studied on the basis of the nonlocal Timoshenko beam model. Influences of the slenderness ratios, the boundary conditions, the atomic structures and the stiffness of the embedded medium on the natural frequencies and mode shapes of SWCNT are examined. The nonlocal effect is significant for the higher modes of SWCNT with a small slenderness ratio embedded in a soft elastic medium, and it softens the SWCNT except for the fundamental frequency of the clamped–free SWCNT.

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来源期刊

Journal of Mechanics 物理-力学

CiteScore

3.20

自引率

11.80%

发文量

审稿时长

6 months

期刊介绍： The objective of the Journal of Mechanics is to provide an international forum to foster exchange of ideas among mechanics communities in different parts of world. The Journal of Mechanics publishes original research in all fields of theoretical and applied mechanics. The Journal especially welcomes papers that are related to recent technological advances. The contributions, which may be analytical, experimental or numerical, should be of significance to the progress of mechanics. Papers which are merely illustrations of established principles and procedures will generally not be accepted. Reports that are of technical interest are published as short articles. Review articles are published only by invitation.